Oil burner



1927' L. c. PCRTERFIELD OIL BURNER Filed Dec. 24, 1925 2 Sheets-Sheet l Patented Jan. 4, 1927. I

UNITED' STATES LEONADUS C. PORTERFIELD, OF ST. LOUIS, MISSOURI.

OIL BUR ER.

Application filed December 24, 1923. Serial No. 682,468.

My invention relates to improvements in oil burners and has for its primary object an oil burner of the gas generating type which can be cheaply constructed and readily installed in furnaces, heating-stoves or cook stoves which have been previously designed for coal or wood consumption, and which can also be used in connection with oil stoves.

A further object is to construct an oil burner of the gas generating type in which the gas orifice in the tip can be readily cleaned while the burner is in operation.

In the drawings Fig. 1 is a vertical section of a heat ing stove with my device in position Fig. 2 is a top plan view of the same;

Fig. 3 is an enlarged top plan View of my burner;

Fig. 4 is a side elevation of the same;

Fig. 5 is a vertical section taken on the line 55 of Fig. 3;

Fig. 6 is an enlarged tragmental section showing the manner of securing the feed line and gas generator;

Fig, 7 is an enlarged fragmental sectional view of the gas tip showing the manner in which the gas orifice may be cleaned; and

Fig. 8 is a side elevation showing the construction of the cleaning wire operating device.

In the construction of my device I employ a stove 10 which may be of any desired construction, either a heating stove as illustrated, a furnace, a cook stove or a specially constructed stove. WVhen my device is to be used as a cook stove, the latter construction is similar to the gas and oil stoves now in use.

My improved burner consists of a base 11 which is preferably provided with an inclined wall and circular in cross section. This base is provided with an inwardly projecting flange l2 and with cut away portions 13. Resting on the flange 12 is a supporting member 14 which is provided with a channel 15 in which is located fire-proof absorbent material 16, this material is preferably asbestos fiber. The supporting member 14 is also provided with a web 17, which web has an integral hollow boss 18 the open ing through which is smaller at the top th. .11 at the bottom. Supported by the web 17 is a burner whichconsists of a circular hollow member 19, this member is provided with vertically extending slits 20. The supporting member 14 is also provided with a boss 21 which is provided with concentric bores 22 and 23. Secured in the bore 22 is a pipe 24 which may be hereafter called the gas generator. This pipe forms almost a complete circle and extends above the absorbent material 16. It is also located so that the flames from the burner will reach the pipe and heat the same. To the opposite end of the gas generator is secured a reducer 25 to which is secured a pipe 26 The pipe 26 is in turn secured to the nipple 27 formed integral with the gas tip 28. The gas tip 28 is provided with a gas orifice 29. The lower or bottom of the gas tip is provided with an opening 30 through which the cleaning wire 31 extends. This cleaning wire is of substantially the samediameter as the gas orifice 29 and is adapted to be passed therethrough at intervals so as to prevent clogging. Secured to the gas tip 28 by means of the coupling nut 32 is a flexible conduit 33 in which the cleaning wire is located and which serves as a guide for the wire so as to prevent the same from kinking during the cleaning operation.

The opposite end of the conduit 33 is secured to a housing 34 by means of the nut 35. The housing 34 is provided with a screw threaded chamber 36 in which is located the screw threaded portion 37. of the cleaning wire operating device. The screw threaded portion 37 is provided with a T-slot 38 in which the head 39 of the cleaning wire is located. The screw threaded member 37 is provided with a shank 40 which receives a knurled-head 41 by means of which the member 37 is moved forward and backward in the screw threaded chamher 36. This operation moves the wire 31 so that the same will pass through the gas orifice for cleaning purposes and also to permit its withdrawal when the cleaning has been accomplished.

Secured in the opening 23 is a feed line 42 which carries a valve 43. The valve 43 is adapted to control the supply of fuel or oil to the gas generator 24. Secured to the supporting member 14 is a pipe 44 which opens into the channel 15 and is for the purpose of supplying oil thereto so that it can be absorbed by the fibrous material 16. The flow of oil through this pipe is controlled by a valve 45. The valves 43 and 45 are in turn connected toa T 46 to which the supply pipe 47 is secured. The pipe 47 is in turn securedto a tank at; which is adapted to contain the fuel and from which the fuel is preferably forced by means of air pressure generated by'the pumps). The

method of feeding however, may be variedif found desirable and the gravity feed employed. In this event however the fuel tank 48 would be raised above the level of the burner. The precise construction or location of the fuel supply however is immaterial as my device will Work equally well withei'thei" the pressi'ir'e or gravity feed.

it will be noted from Figs. 1 and 2 that the housing 3 is supported by the T 426. By this construction the means for cleanii'ig the gas orifice, as well as the valves for controlling the fuel supply, are located outside of the stove so that absolute control of the burner under all coi'iditions can be readily had.

The operation of my device is as lowsz The fuel tanh' 48 is first filled to the-proper point,: after which pressure put upon the fuel and the'v'alve controlling the how of fuel t o the supply pipe 4 4' opened; the valves 43 and a having been previously closed.

.i: 1 MM- The valve 4-15 is then opened allowing oil to'flow intothechannel Where it is absorbed by theabsorbent material" 16. After this absorbent material becomes well impregnated wih oil a match is applied. The flames arising from the absorbentmaterial envelop the gas generator 24: and heat the same; As soon the'absorbent material is ignited the valve d5 shut off. After the gas generator has bec'ome'heated the valve 43' is opened, this allows fuel to enter the generator through the pipe as and on coming in contact with the heated generator 2 to'liash into a gas. fhis gas is then conducted to the gas tip and from there passes up'vfiar'd through the op *ning formed in the boss 18 and into the burner passing out through the ol'ie'nings 20 where it is ignited and continiiesto'heat the generator 24; thus insuring a continual supply of The rushing through the opening in the boss 18' creates a suction therein carrying- With it a large amount oi" air which mixingwith the gas'generat'ed burns in a blue Elaine when ignited", thus giving an intensely hot flame and practically no carbon or soot deposit". The size of the flame can be readily regulated by means of the valve e l-3 w iQll controls'the fuel supply the amount of air carried up by the gas depending on the velocit y and volume of gaspassing through the hollow boss, therefore the valve opening indirectly controls the amount of airwhich mingles with the gas and consequently the heat of the flame is regulated.

My device is intended primarily for the use ofkerosene, which upon being vaporized or converted into a gas, leaves behind a certainamount of solid-matter which will settle in the tip and clog it. 7

In the event that the'gastip or rather the gas orifice should become entirely or par-' tially clogged it is only necessary to operate" the knurled read so as to feed the screw threaded member 3? into the housing 3st. This operation pushes the cleaning wire 81 into 'the conduit 33and through the gas orifice and-u'pon'the reversed turning of the knob 41 the wire is again withdrawn, thus it will be' readily seen that the gas orific'e'ca-n be cleaned while the burner is in operationwithout the necessity of allowing the burner to 'cool down'and-talzing the same apart or in any way effectingthe adjustment of the fuel valve. This'ha," hitherto been a great objection to oilbuni'ers of the gas generatin'g' type and is entirely overcome by my construction:

Having fully described my invention, what I claim is lu'All oil burner comprising a circular base having an upwardly and inwardly inclined wall; an integral inwardly extending flange adjacent the upper edgeof said base, a supporting member provided with a channel located on said flange, aweb integral with said supporting member, a hollow boss integral with said web and concentric with said base, the opening through said boss being smaller at its topthan at its bottom, a circular hollow burner provided with vertical. slits supported by said web above said bos a Id partially surrounded by said channeh a gas gehcraror partially surrounding said l." er and located above said channel, means for supplying oil to one end of said generaton a tip located below and concentric with said boss. a pipe for connecting saidtipwith theremaining end of said gen erator, means for initially heating said i.- erator whereby vaporized oil is delivered from said ti: and means for coutroll' the supply ol oil to said generator.

The oil burner of claim 1 in which means is provided for supplyiup and re lating oil to the means for initiall the generator.

In testimony whereof. l. have name fO' jlllF" specification.

LEQNADUS Cl. l 

